code wiki / _hdl_build / nx_align_gate.nx
nx_align_gate.nx source
↩ module page · 142 lines · 8057 B
1// nx_align_gate.nx -- VERDICT gate for flexbox align-items (cross-axis alignment). A 100px-tall flex row
2// with a 60px and a 20px item: align-items center/flex-end shift each item vertically within the row.
3// Asserts exact item Y vs the flex-start CONTROL (proves alignment moves them). LIAR-KILL: wrong Y
4// rejected. 100% sovereign nx_cc->nxasm. license_tier: ORIGINAL
5import "nx_syscalls.nx"
6import "nx_css_tokenize.nx"
7import "nx_css_parse.nx"
8import "nx_css_apply.nx"
9import "nx_css_color_decode.nx"
10import "nx_css_dimension_to_px.nx"
11import "nx_css_selector_match.nx"
12import "nx_html_tokenizer.nx"
13import "nx_dom_query.nx"
14import "nx_layout_box.nx"
15import "nx_layout_default_display.nx"
16import "nx_layout_from_dom.nx"
17import "nx_layout_block.nx"
18import "nx_render_html.nx"
19
20func g_w(s: *u8) -> i64 { var k: i64=0; while s[k]!=(0 as u8){k=k+1} sys_write(1,s,k); return 0 }
21func pn(v0: i64) -> i64 { var v: i64=v0; if v<0 { let m: *u8=sys_mmap(8); m[0]=45 as u8; sys_write(1,m,1); v=0-v } let b: *u8=sys_mmap(24); var k: i64=0; if v==0 {b[0]=48;k=1} while v>0 {b[k]=(48+(v%10)) as u8; v=v/10; k=k+1} let o: *u8=sys_mmap(24); var j: i64=0; while j<k {o[j]=b[k-1-j];j=j+1} sys_write(1,o,k); return 0 }
22
23func run_layout(html: *u8, css: *u8, vw: i64, tree_out: **LayoutTree, boxel_out: **CssElement, buf_out: **u8) -> i64 {
24 var hlen: i64 = 0
25 while html[hlen]!=(0 as u8) { hlen=hlen+1 }
26 var clen: i64 = 0
27 while css[clen]!=(0 as u8) { clen=clen+1 }
28 let total: i64 = hlen + clen
29 let buf: *u8 = sys_mmap(total + 16)
30 var i: i64 = 0
31 while i < hlen { buf[i]=html[i]; i=i+1 }
32 var j: i64 = 0
33 while j < clen { buf[hlen+j]=css[j]; j=j+1 }
34 let boxes: *LayoutBox = (sys_mmap(NX_LAYOUT_BOX_BYTES*1024+16)) as *LayoutBox
35 let tree: *LayoutTree = (sys_mmap(64)) as *LayoutTree
36 nx_layout_tree_init(tree, boxes, 1024)
37 let stk: *LayoutFromDomStack = (sys_mmap(NX_LAYOUT_FROM_DOM_STACK_BYTES+8)) as *LayoutFromDomStack
38 let sidx: *i64 = (sys_mmap(8*64)) as *i64
39 nx_layout_from_dom_stack_init(stk, sidx, 64)
40 nx_layout_from_dom(buf, hlen, tree, stk)
41 let ext: *CssElement = (sys_mmap(NX_CSS_ELEMENT_BYTES*1024 as nx_size)) as *CssElement
42 let n_ext: i64 = rh_extract(buf, hlen, ext, 1024)
43 let boxel: *CssElement = (sys_mmap((NX_CSS_ELEMENT_BYTES*(tree.count+1)) as nx_size)) as *CssElement
44 var k: i64 = 0
45 i = 0
46 while i < tree.count {
47 let bb: *LayoutBox = ((tree.boxes as i64)+i*NX_LAYOUT_BOX_BYTES) as *LayoutBox
48 let e: *CssElement = ((boxel as i64)+i*NX_CSS_ELEMENT_BYTES) as *CssElement
49 e.src = buf
50 var mapped: i64 = 0
51 if rh_is_elem(bb.kind)==1 { if bb.parent_idx != (0-1) { if k < n_ext {
52 let s: *CssElement = ((ext as i64)+k*NX_CSS_ELEMENT_BYTES) as *CssElement
53 e.tag_off=s.tag_off; e.tag_len=s.tag_len; e.id_off=s.id_off; e.id_len=s.id_len; e.class_off=s.class_off; e.class_len=s.class_len
54 k=k+1; mapped=1
55 } } }
56 if mapped==0 { e.tag_off=0; e.tag_len=0; e.id_off=0; e.id_len=0; e.class_off=0; e.class_len=0 }
57 i=i+1
58 }
59 let cur: *CssCursor = (sys_mmap(NX_CSS_CURSOR_BYTES) as nx_size) as *CssCursor
60 nx_css_cursor_init(cur, buf, total); cur.pos = hlen
61 let tok: *CssToken = (sys_mmap(NX_CSS_TOKEN_BYTES) as nx_size) as *CssToken
62 let rules: *CssRule = (sys_mmap(NX_CSS_RULE_BYTES*512 as nx_size)) as *CssRule
63 let decls: *CssDeclaration = (sys_mmap(NX_CSS_DECLARATION_BYTES*512 as nx_size)) as *CssDeclaration
64 let st: *CssParseState = (sys_mmap(128) as nx_size) as *CssParseState
65 nx_css_parse_state_init(st, cur, tok, rules, 512, decls, 512)
66 nx_css_parse(st)
67 let computed: *CssComputedDecl = (sys_mmap(NX_CSS_COMPUTED_DECL_BYTES*4096 as nx_size)) as *CssComputedDecl
68 let cb: *i64 = (sys_mmap(8)) as *i64
69 rh_cascade(buf, rules, st.rule_count, decls, st.decl_count, boxel, tree.count, tree, computed, 4096, cb)
70 let ncomp: i64 = cb[0]
71 let pbuf: *u8 = sys_mmap(256)
72 let ltable: *LayoutPropTable = (sys_mmap(NX_LAYOUT_PROP_TABLE_BYTES)) as *LayoutPropTable
73 nx_layout_prop_table_init(ltable, pbuf)
74 let resolve: *CssResolveCtx = (sys_mmap(NX_CSS_RESOLVE_CTX_BYTES)) as *CssResolveCtx
75 resolve.root_font_size_px = 16; resolve.parent_font_size_px = 16; resolve.parent_dimension_px = vw
76 let lctx: *LayoutCtx = (sys_mmap(NX_LAYOUT_CTX_BYTES)) as *LayoutCtx
77 nx_layout_ctx_init(lctx, tree, computed, ncomp, buf, vw, resolve)
78 nx_layout_block_layout(lctx, ltable, 0)
79 tree_out[0] = tree; boxel_out[0] = boxel; buf_out[0] = buf
80 return 0
81}
82func find_class(tree: *LayoutTree, boxel: *CssElement, buf: *u8, cls: *u8) -> i64 {
83 var cl: i64 = 0
84 while cls[cl]!=(0 as u8) { cl=cl+1 }
85 var i: i64 = 0
86 while i < tree.count {
87 let e: *CssElement = ((boxel as i64)+i*NX_CSS_ELEMENT_BYTES) as *CssElement
88 if e.class_len >= cl {
89 var off: i64 = e.class_off; var pe: i64 = e.class_off+e.class_len; var hit: i64 = 0
90 while off + cl <= pe { var j: i64=0; var ok: i64=1; while j<cl { if (buf[off+j]&0xff)!=(cls[j]&0xff){ok=0;j=cl} else {j=j+1} } if ok==1 { hit=1; off=pe } else { off=off+1 } }
91 if hit==1 { return i }
92 }
93 i = i + 1
94 }
95 return 0 - 1
96}
97func box_y(tree: *LayoutTree, i: i64) -> i64 { let b: *LayoutBox = ((tree.boxes as i64)+i*NX_LAYOUT_BOX_BYTES) as *LayoutBox; return b.y }
98func chky(tree: *LayoutTree, boxel: *CssElement, buf: *u8, cls: *u8, want: i64, label: *u8, pass: *i64) -> i64 {
99 let bi: i64 = find_class(tree, boxel, buf, cls)
100 let got: i64 = box_y(tree, bi)
101 g_w(" " as *u8); g_w(label); g_w(": " as *u8)
102 if got==want { g_w("OK (y=" as *u8); pn(got); g_w(")\n" as *u8); pass[0]=pass[0]+1 }
103 else { g_w("FAIL got y=" as *u8); pn(got); g_w(" want " as *u8); pn(want); g_w("\n" as *u8) }
104 return 0
105}
106
107func main() -> i64 {
108 let pass: *i64 = sys_mmap(8) as *i64; pass[0]=0
109 g_w("=== ALIGN-ITEMS GATE (flex cross-axis alignment, sovereign) ===\n" as *u8)
110 let html: *u8 = "<div id=\"c\"><div class=\"tall\"></div><div class=\"short\"></div></div>\x00" as *u8
111 let tp: **LayoutTree = sys_mmap(8) as **LayoutTree
112 let bp: **CssElement = sys_mmap(8) as **CssElement
113 let up: **u8 = sys_mmap(8) as **u8
114
115 // CONTROL flex-start: both items at top y=0
116 run_layout(html, "#c{display:flex;height:100px}.tall{width:80px;height:60px}.short{width:80px;height:20px}\x00" as *u8, 800, tp, bp, up)
117 g_w("flex-start control (both y=0)\n" as *u8)
118 chky(tp[0], bp[0], up[0], "tall\x00" as *u8, 0, "tall y=0\x00" as *u8, pass)
119 chky(tp[0], bp[0], up[0], "short\x00" as *u8, 0, "short y=0\x00" as *u8, pass)
120
121 // center within 100: tall(60)->y=20, short(20)->y=40
122 run_layout(html, "#c{display:flex;align-items:center;height:100px}.tall{width:80px;height:60px}.short{width:80px;height:20px}\x00" as *u8, 800, tp, bp, up)
123 g_w("align-items:center (tall y=20, short y=40)\n" as *u8)
124 chky(tp[0], bp[0], up[0], "tall\x00" as *u8, 20, "tall y=20\x00" as *u8, pass)
125 chky(tp[0], bp[0], up[0], "short\x00" as *u8, 40, "short y=40\x00" as *u8, pass)
126
127 // flex-end within 100: tall->y=40, short->y=80
128 run_layout(html, "#c{display:flex;align-items:flex-end;height:100px}.tall{width:80px;height:60px}.short{width:80px;height:20px}\x00" as *u8, 800, tp, bp, up)
129 g_w("align-items:flex-end (tall y=40, short y=80)\n" as *u8)
130 chky(tp[0], bp[0], up[0], "tall\x00" as *u8, 40, "tall y=40\x00" as *u8, pass)
131 chky(tp[0], bp[0], up[0], "short\x00" as *u8, 80, "short y=80\x00" as *u8, pass)
132
133 // LIAR-KILL: in flex-end, tall is NOT at y=0
134 let bi: i64 = find_class(tp[0], bp[0], up[0], "tall\x00" as *u8)
135 g_w("LIAR-KILL (wrong y rejected)\n" as *u8)
136 g_w(" tall y != 0: " as *u8)
137 if box_y(tp[0], bi) != 0 { g_w("OK\n" as *u8); pass[0]=pass[0]+1 } else { g_w("FAIL\n" as *u8) }
138
139 g_w("ALIGN rows=7 pass=" as *u8); pn(pass[0])
140 if pass[0]==7 { g_w(" verdict=GREEN\n" as *u8); sys_exit(0); return 0 }
141 g_w(" verdict=RED\n" as *u8); sys_exit(1); return 1
142}